This year, the gypsy moth has taken the most hold in Pike, Monroe, Carbon, Schuylkill, Northumberland and Luzerne counties, with the northern tier of the Lehigh Valley also affected, according to the DCNR.

A team of researchers led by Oregon State University entomologist Darrell Ross believe the predatory silver fly could offer hope of controlling the hemlock woolly adelgid, an insect that has infested millions of acres of hemlocks from northern Georgia to Maine.